Next up is servo boxes. I assembled them earlier so they are ready to install. I had already laid out the location for the boxes on some masking tape. The installation is very simple. Set the box upside down on the tape and trace around it with the exacto knife. Score along the tape line a couple of times until you cut through the sheeting. Then cut to the depth of the blade similar to what was done when installing the control horn blocks. Make sure the cuts are straight down / perpendicular to the face. When cut all around, cut across a few times. Then I use a shop vac and a knife.....pluck out the middle and let the vac suck up the scraps. Scrape the bottom of the hole with the blade tip until the bottom of the hole is even. Test fit the box and make sure it fits, it should fit snug but you should not have to force it in place.
Before installing the stab boxes use the brass tube and cut a wire chase hole for the servo wire. Easier to do now than after the servo box is installed. Once all holes are cut
and boxes are test fit, the boxes are installed with quick poly glue. Use a popsicle stick to apply glue evenly to the sides (not bottom) of the servo box hole. Make sure it is thin, and spread evenly. Mist the box itself with water and install the box. Check on them every couple minutes for 10-15 minutes and when the glue foams up into the hole, use a stick and push down the bubbles. If you don't do this it is more work to remove it after the glue has cured.
After the about 30 minutes or so (or as soon as the glue is not sticky when you touch it) you can sand the top of the boxes flush. Apply some more tape around the box so that you don't accidentally sand into the sheeting. Sand the box down to the surface of the tape. Remove the tape and sand with the grain until the top of the box is flush with the sheeting.